Practical Experiences with the Use of Water as a Dust Control Measure for Scabbling and Jackhammering Concrete

Details

• Personal Author:
  Echt, Alan S.
• Description:
  Excessive exposures to crystalline silica can occur during the construction and renovation of roads and buildings. These exposures result from the disruption of surfaces or structures containing crystalline silica. Crystalline silica is a component of sand, concrete, brick, block, mortar, and some paints used to coat steel structures. Uncontrolled abrading, cutting, drilling and breaking of materials containing crystalline silica can result in exposures that exceed exposure limits for crystalline silica by as much as a factor of 100. Practical control measures provide significant exposure reductions. Effective control measures use water, high velocity low volume ventilation, or substitution of materials or processes. These control measures have different capabilities and limitations. Recent field trials have evaluated the capabilities and limitations of control measures, resulting in some surprises. For example, recent efforts to use alternatives to sand during abrasive blasting have not eliminated the potential for silica exposure because some steel structures are coated with paints that contain crystalline silica. However, water can effectively suppress dust generation in some situations, and local exhaust ventilation can reduce exposures." [Description provided by NIOSH]
• Subjects:
  Aluminum Silicates Construction Industry Dust Environmental Monitoring Occupational Exposure Occupational Health Safety Silicon Dioxide Ventilation
• Keywords:
  Concretes Construction-industry Construction-workers Control-methods Dust-control Dusts Exposure-assessment Exposure-levels Exposure-limits Occupational-exposure Road-construction Road-surfacing Silica-dusts Silicates

  More +
• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1
• NIOSHTIC Number:
  nn:20027279
• Citation:
  American Industrial Hygiene Conference and Exposition, May 21-26, 2005, Anaheim, California. Fairfax, VA: American Industrial Hygiene Association, 2005 May; :1
• Federal Fiscal Year:
  2005
• NORA Priority Area:
  Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Peer Reviewed:
  False
• Source Full Name:
  American Industrial Hygiene Conference and Exposition, May 21-26, 2005, Anaheim, California
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:77560847a34748d0f3e05a777ec7dc47bd8f57d48e291645f6df00b0f686fbb6b90932c0dd6cd61b702a61670fd65ec9492a63526adcf64ca45dc2f96b1fa473
• Download URL:
  https://stacks.cdc.gov/view/cdc/197523/cdc_197523_DS1.pdf
• File Type:
  [PDF - 223.08 KB ]